The invention relates to a method for testing the function of a tubular bag machine, the tubular bag machine comprising a drive control system and multiple electronic drive units which are controlled independently of each other by the drive control system and which drive different functional elements of the packing machine in a cycle time-synchronous manner as they are going through predefined motion sequences, and one drive unit being realized in the manner of a transverse sealing unit, and the transverse sealing unit comprising at least one drive motor (02) and two transverse sealing jaws (13a, 13b) which are driven relative to each other by the drive motor (02) and by means of which a film tube (09) is sealed transversely to the conveying direction (21), and the drive torque (M) of the drive motor (02) being measured directly or indirectly using a drive controller, and the position () of the drive motor (02) being measured directly or indirectly using a position sensor, the method comprising the following steps: a) removing the film tube (09) from the sealing zone between the transverse sealing jaws (13a, 13b); b) closing the transverse sealing jaws (13a, 13b) according to a predefined target torque stored in the drive control system; c) measuring the actual position of the drive motor (02) once the target torque has been reached; d) comparing the measured actual position to a target position stored in the drive control system and associated with the predefined target torque.

A portable table top welder for welding plastic material webs, the portable table top welder including a frame including a carrier housing and a support arm at which a welding device is arranged; at least one transport roller including a rotatable transport roller axle and at least one contact pressure roller that is rotatably supported at the carrier housing, wherein a weight is arranged at an eccentrical element which is rotatably connected at one side by a concentrically supported eccentrical element axle at the carrier housing and rotatably connected at another side by an eccentrically supported contact pressure roller axle at the contact pressure roller. The table top welder handles and transports easily and can be mounted on a table or on another carrier structure in a disengageable manner.

A method for operating a tubular bag machine with a drive control system and multiple electronic drive units controlled independently of each other for driving functional elements of the packing machine in a cycle time-synchronous manner through predefined motion sequences, one drive unit being a transverse sealing unit with a drive motor driving two transverse sealing jaws for transversely sealing a film tube, and at least conversion functions for converting the drive torque and the position of the drive motor into the sealing force between the transverse sealing jaws being stored or calculated in the drive control system, the method including determining the operating temperature of the transverse sealing jaws, selecting or calculating a conversion function as a function of the operating temperature, using the temperature-dependent conversion function in calculating the drive torque of the drive motor required to reach a desired target sealing force between the transverse sealing jaws.

A thermal bonding assembly for sheets made of polymeric material includes at least one pair of jaws that can be moved mutually closer, at least one of which is provided with a heater at its surface for abutment against a corresponding complementary surface of the other jaw of the pair. The assembly includes a shaft that can rotate by virtue of the action of a respective motor. The rotatable shaft includes at least two eccentric rings which are arranged side by side so that the eccentric portion that protrudes the most with respect to the rotation axis is substantially mutually opposite. Each jaw of the pair includes a respective through hole for the accommodation of the shaft. The shaft is accommodated in the hole of a respective jaw with the interposition of a rotatable disk.

Various device embodiments perform a sealing operation on a moving web, and comprise, among other things a plate assembly with an air cylinder assembly. The air cylinder assembly comprises a mount, a back plate, at least one air cylinder positioned between the mount and the back plate. The first plate assembly further includes a linear servo motor for linearly moving the air cylinder assembly with respect to the first base, and a first tooling plate with a sealing surface area. The first tooling plate coupled to the back plate.

A method for monitoring a tubular bag machine having a drive control system and independently controlled electronic drive units controlled by a drive control system for driving functional elements of the packing machine in a cycle time-synchronous manner in predefined motion sequences, one drive unit being a transverse sealing unit with a drive motor and two transverse sealing jaws for transversely sealing a film tube, and the drive motor torque measured using a drive controller, and the drive motor position measured using a position sensor, the method including moving the film tube into the sealing zone between the transverse sealing jaws, closing the jaws according to a predefined target torque stored in the drive control system, measuring the actual position of the drive motor upon reaching the target torque, and comparing the measured position to a target position stored in the drive control system associated with the predefined target torque.

Various device embodiments perform a sealing operation on a moving web, and comprise, among other things a plate assembly with an air cylinder assembly. The air cylinder assembly comprises a mount, a back plate, at least one air cylinder positioned between the mount and the back plate. The first plate assembly further includes a linear servo motor for linearly moving the air cylinder assembly with respect to the first base, and a first tooling plate with a sealing surface area. The first tooling plate coupled to the back plate.

Bale strap assemblies for strapping a pressed bale are materials capable of being strapped are discussed herein. The bale strap assemblies account for jumping affects at the weld jaws due to reciprocating motions of the crank on the connecting rod and are adjusted by varying relative positions between the crank and the weld jaws.

A sealing assembly for packaging lines of the type having mutually opposite sealing heads between which the polymeric sheets to be mated translate, includes mutually opposite synchronously rotating carousels. At least two eccentric shafts are pivoted on each carousel, and at least one respective sealing head is pivoted on each one of the shafts at an axis. Each eccentric shaft includes a respective slider that can move along a fixed contoured profile for the movement of the respective shaft. A linkage connects corresponding levers which are substantially integral with the eccentric shafts. The levers are opposite to the point of coupling to the respective slider. Each sealing head is controlled by orientation elements which are integral with the respective carousel.

A packaging machine to make an airtight wrapper (12) comprising a wrapping sheet (112) wrapped airtight around a structured assembly (11) consisting of an organized group of smoking articles (14) associated with a reinforcement insert (16) comprises, in working sequence on one or more cyclical conveyor devices (39, 71) of the wheel or carousel type: a structured assembly formation unit (30), a combination unit (31) suitable to combine the structured assembly (11) with said wrapping sheet (112), a wrapping sheet work unit (32) and a welding unit (34).